#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int year = 1000;
	while (year>=1000&&year<=2000)
	{
		year++;
		if ((year % 4 == 0 && year % 100 != 0) || year % 100 == 0 && year % 400 == 0)
		{
			printf("%d ", year);
		}
	}
	return 0;
}